449053777569 has 4 divisors (see below), whose sum is σ = 598738370096. Its totient is φ = 299369185044.

The previous prime is 449053777561. The next prime is 449053777573. The reversal of 449053777569 is 965777350944.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 449053777569 - 2³ = 449053777561 is a prime.

It is a super-3 number, since 3×449053777569³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (449053777561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74842296259 + ... + 74842296264.

It is an arithmetic number, because the mean of its divisors is an integer number (149684592524).

Almost surely, 2^449053777569 is an apocalyptic number.

It is an amenable number.

449053777569 is a deficient number, since it is larger than the sum of its proper divisors (149684592527).

449053777569 is a wasteful number, since it uses less digits than its factorization.

449053777569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149684592526.

The product of its (nonzero) digits is 200037600, while the sum is 66.

The spelling of 449053777569 in words is "four hundred forty-nine billion, fifty-three million, seven hundred seventy-seven thousand, five hundred sixty-nine".